compat: Fix compilation error on CentOS 7.6

This fix the compilation issue on CentOS 7.6 kernel
(3.10.0-957.21.3.el7.x86_64).

Reported-at: https://mail.openvswitch.org/pipermail/ovs-dev/2019-June/360013.html
Reported-by: Fred Neubauer <fred.neubauer@gmail.com>
Fixes: 6660a9597a49 ("datapath: compat: Introduce static key support")
Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>

diff --git a/datapath/linux/compat/include/linux/static_key.h b/datapath/linux/compat/include/linux/static_key.h
index 01c6a93f07fec95807ef7b6f44c022dba6a33980..7e43a49e84f122b36ea468454ea3333848bf7727 100644 (file)
--- a/datapath/linux/compat/include/linux/static_key.h
+++ b/datapath/linux/compat/include/linux/static_key.h
@@ -1,6 +1,7 @@
 #ifndef _STATIC_KEY_WRAPPER_H
 #define _STATIC_KEY_WRAPPER_H
 
+#include <linux/atomic.h>
 #include_next <linux/static_key.h>
 #ifndef HAVE_UPSTREAM_STATIC_KEY
 /*